中国物理B ›› 2016, Vol. 25 ›› Issue (8): 80501-080501.doi: 10.1088/1674-1056/25/8/080501

• GENERAL • 上一篇    下一篇

Robust pre-specified time synchronization of chaotic systems by employing time-varying switching surfaces in the sliding mode control scheme

Alireza Khanzadeh, Mahdi Pourgholi   

  1. Faculty of Electrical Engineering, Shahid Beheshti University, A. C. Tehran, Iran
  • 收稿日期:2015-09-25 修回日期:2016-04-25 出版日期:2016-08-05 发布日期:2016-08-05
  • 通讯作者: Mahdi Pourgholi E-mail:m_pourgholi@sbu.ac.ir

Robust pre-specified time synchronization of chaotic systems by employing time-varying switching surfaces in the sliding mode control scheme

Alireza Khanzadeh, Mahdi Pourgholi   

  1. Faculty of Electrical Engineering, Shahid Beheshti University, A. C. Tehran, Iran
  • Received:2015-09-25 Revised:2016-04-25 Online:2016-08-05 Published:2016-08-05
  • Contact: Mahdi Pourgholi E-mail:m_pourgholi@sbu.ac.ir

摘要: In the conventional chaos synchronization methods, the time at which two chaotic systems are synchronized, is usually unknown and depends on initial conditions. In this work based on Lyapunov stability theory a sliding mode controller with time-varying switching surfaces is proposed to achieve chaos synchronization at a pre-specified time for the first time. The proposed controller is able to synchronize chaotic systems precisely at any time when we want. Moreover, by choosing the time-varying switching surfaces in a way that the reaching phase is eliminated, the synchronization becomes robust to uncertainties and exogenous disturbances. Simulation results are presented to show the effectiveness of the proposed method of stabilizing and synchronizing chaotic systems with complete robustness to uncertainty and disturbances exactly at a pre-specified time.

关键词: chaos synchronization, finite time synchronization, sliding mode controller, time varying switching surfaces

Abstract: In the conventional chaos synchronization methods, the time at which two chaotic systems are synchronized, is usually unknown and depends on initial conditions. In this work based on Lyapunov stability theory a sliding mode controller with time-varying switching surfaces is proposed to achieve chaos synchronization at a pre-specified time for the first time. The proposed controller is able to synchronize chaotic systems precisely at any time when we want. Moreover, by choosing the time-varying switching surfaces in a way that the reaching phase is eliminated, the synchronization becomes robust to uncertainties and exogenous disturbances. Simulation results are presented to show the effectiveness of the proposed method of stabilizing and synchronizing chaotic systems with complete robustness to uncertainty and disturbances exactly at a pre-specified time.

Key words: chaos synchronization, finite time synchronization, sliding mode controller, time varying switching surfaces

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a